Rebel Melanie Elizabeth Wilson[2] (born 3 February 1986) is an Australian actress, writer, entrepreneur, and stand-up comedian. She began appearing as Toula in the SBS comedy series Pizza from 2003 and sketch comedy series The Wedge. In 2008, Wilson wrote, produced and starred in the musical comedy series Bogan Pride. The following year, she won the Tropfest Best Actress award for her role in Bargain and made a guest appearance in City Homicide. Shortly after moving to the United States, Wilson was cast as Brynn in the feature film Bridesmaids.

Her first career choice was mathematics. Wilson told The Sydney Morning Herald, "I was very academic at high school and was always good with numbers."[14] Wilson attended the University of New South Wales, where she studied Law and Arts (Theatre and Performance Studies).[14] She is a former Rotary International Youth Ambassador for Australia and was based in South Africa for one year, where she contracted malaria.[5][14] Wilson had hallucinations in which she saw herself as an actress who had won an Oscar. This then convinced her to pursue an acting career.[5]

In July 2011, Wilson became a spokesperson for weight loss and nutrition company Jenny Craig in Australia.[3][52] In January 2012, Wilson revealed to James Wigney and Elle Halliwell of The Daily Telegraph that she had lost 10 kilograms (22 lb) since signing up to the program.[53]

She revealed that the producers of Pitch Perfect had refused to let her lose any more weight during filming, as her contract stated she must stay the same size.[53] Wilson said once her film commitments were over, she would start her diet again to reach her target weight of 80 kilograms (180 lb).[53] In February 2013, Wilson confirmed that she had ended her agreement with Jenny Craig the previous year.[54]